Water testing apparatus



FIG. 1 is a top isometric view of a water testing apparatus;

FIG. 2 is a bottom isometric view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a back side view thereof; and,

FIG. 8 is a front side view thereof.

The broken lines depict portions of the water testing apparatus that form no part of the claim. 

CLAIM The ornamental design for a water testing apparatus, as shown and described. 